| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a vibration actuator which can suppress the adhesion of a rotor and a stator, and to provide a lens barrel and an optical apparatus. <P>SOLUTION: The vibration actuator (10) is constituted of: a stator (11) which is formed into an annular shape; a rotor (15) which has an annular contact face contacting with the stator, and rotates according to the vibration of the stator; and a pressing part (19) which presses the stator and the rotor from a direction crossing the contact face. The rotor is constituted of a body (30) which is formed into an annular shape, a contact part (31) having the contact face, and a connecting part (32) which is formed so as to extend from the body in a direction almost parallel with the contact face and which connects the body and the contact part. In the pressed state by the pressing part, an angle (A1) formed of a face orthogonal to the rotating shaft (18) and a direction in which the connecting part extends is made larger than an angle (A2) formed of a face orthogonal to the rotating shaft and the contact face of the contact part. <P>COPYRIGHT: (C)2010,JPO&INPIT |
